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Pulmonary carcinoid tumourlet (view source)
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'''Pulmonary carcinoid tumourlet''', also '''carcinoid tumourlet''', is a small benign proliferation of Kulchitsky cells. | |||
==General== | |||
*Neuroendocrine cell proliferation.<ref name=pmid8109497>{{Cite journal | last1 = Bennett | first1 = GL. | last2 = Chew | first2 = FS. | title = Pulmonary carcinoid tumorlets. | journal = AJR Am J Roentgenol | volume = 162 | issue = 3 | pages = 568 | month = Mar | year = 1994 | doi = | PMID = 8109497 | URL = http://www.ajronline.org/content/162/3/568.full.pdf }}</ref> | |||
**Essentially a small [[typical carcinoid lung tumour|typical carcinoid]]. | |||
*Arise from Kulchitsky cells of the bronchial epithelium.<ref name=pmid9064089>{{Cite journal | last1 = Ramón Capilla | first1 = M. | last2 = Arnau Obrer | first2 = A. | last3 = Navarro Ibáñez | first3 = R. | last4 = Galbis Caravajal | first4 = J. | last5 = Traves Zapata | first5 = V. | last6 = Cantó Armengod | first6 = A. | title = [Pulmonary tumorlet. Report of 5 cases]. | journal = Arch Bronconeumol | volume = 32 | issue = 9 | pages = 489-91 | month = Nov | year = 1996 | doi = | PMID = 9064089 }}</ref> | |||
==Microscopic== | |||
Features: | |||
*Nests of cells - classic pattern. | |||
**Salt and pepper chromatin - '''key feature'''. | |||
*Size criterion: <5 mm.<ref name=pct_ucsf>URL: [http://pathhsw5m54.ucsf.edu/case7/image75.html http://pathhsw5m54.ucsf.edu/case7/image75.html]. Accessed on: 23 January 2012.</ref><ref name=pmid23205296>{{Cite journal | last1 = He | first1 = P. | last2 = Gu | first2 = X. | last3 = Wu | first3 = Q. | last4 = Lin | first4 = Y. | last5 = Gu | first5 = Y. | last6 = He | first6 = J. | title = Pulmonary carcinoid tumorlet without underlying lung disease: analysis of its relationship to fibrosis. | journal = J Thorac Dis | volume = 4 | issue = 6 | pages = 655-8 | month = Dec | year = 2012 | doi = 10.3978/j.issn.2072-1439.2012.06.11 | PMID = 23205296 }}</ref> | |||
DDx: | |||
*[[Typical carcinoid lung tumour]]. | |||
===Images=== | |||
*[http://pathhsw5m54.ucsf.edu/case7/image75.html Tumourlets - several images (ucsf.edu)]. | |||
==Sign out== | |||
<pre> | |||
A. Lymph Node, Station 4R, Lymphadenectomy: | |||
- Lymph node, NEGATIVE for malignancy. | |||
B. Lymph Node, Station 11R, Lymphadenectomy: | |||
- Lymph node, NEGATIVE for malignancy. | |||
C. Lung, Right Middle Lobe, Lobectomy: | |||
- Typical carcinoid tumour (13 mm maximal dimension). | |||
- Carcinoid tumourlet (3 mm maximal dimension). | |||
- Margins clear of tumour. | |||
- Please see tumour summary. | |||
</pre> | |||
==See also== | |||
*[[Lung_tumours]]. | |||
==References== | |||
{{Reflist|1}} | |||
[[Category:Diagnosis]] | [[Category:Diagnosis]] | ||
[[Category:Lung tumours]] | |||